Constitute the main material of cement concrete

Data show that China is the world's annual new construction of the largest countries in each of the two billion square meters
New area , Stabilized Soil Mixing Plant 40% of the world consumption of cement and steel , but only last 25-30 years.In contrast, a much longer life expectancy in developed countries the building , such as the UK , the average life expectancy of 132 buildings Years, the U.S. life expectancy reached 74 years of construction . On the other hand , the main material constituting the cement concrete ,Is also facing serious challenges : precast concrete plant firing mainly in large formation of limestone and clay ,Every produce 1 ton of cement , it produces nearly one ton of carbon dioxide in the anthropogenic emissions of greenhouse gases , about
5% from cement production .